Two more special guests will be onstage with the Hollywood Vampires for a pair of September shows, as Guns N' Roses vets Matt Sorum and Duff McKagan assume rhythm-section duties. They complete a lineup led by Alice Cooper, Johnny Depp and Joe Perry.

The Hollywood Vampires are set to play the Roxy on the Sunset Strip on Sept. 16 and 17, in what is being billed as their lone U.S. dates. The band also announced its only international appearance for Rock in Rio on Sept. 24.

Cooper revived the Hollywood Vampires – originally a '70s-era drinking club with a rotating cast that featured Micky Dolenz, John Lennon, Keith Moon, Harry Nilsson, Bernie Taupin and others – a couple of years ago, but decided to focus instead on making music. The original group's hangout was also on the Sunset Strip, at the Rainbow Bar and Grill.

This revived Hollywood Vampires' onstage lineup will be rounded out by Tommy Henriksen on guitar and Bruce Witkin on both piano and guitar. Tickets for the Roxy dates go on sale Friday.

They are partnering with the Starkey Hearing Foundation to provide and fit hearing aids to more than 150 needy people before the Rock in Rio stop. A group will then be brought to the concert to hear music for the first time in their lives. The Hollywood Vampires' new all-star album, produced by Bob Ezrin, is set for release on Sept. 11; all artist proceeds will be donated to MusiCares.

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